Tire tread and buttress



FIG. 1 is a perspective view of a tire tread and buttress showing our new design, it being understood that the tread pattern is repeated throughout the circumference thereof, and the buttress on, the opposite side is substantially the same as that shown;

FIG. 2 is a front elevational view thereof; and

FIG. 3 is a side elevational view thereof.

The broken lines in the drawings are understood to be for illustrative purposes only. 

The ornamental design for a tire tread and buttress, as shown and described. 